Are you looking for how these fit into Gastropoda generally, or for
classification within the families?

Skeneidae and Cyclostrematidae are currently listed as vetigastropods,
Trochoidea.  The other three are caenogastropods, Rissooidea.  Unless
a species has received anatomical or genetic study, the placement may
be problematic.  Such studies keep turning up novel features that
indicate new classifications.

On 4/4/07, Alfonso Pina <[log in to unmask]> wrote:
> Hi,
>
> Could please anybody tell me something about the current knowledged
> relationships of the families Adeorbidae, Vitrinellidae, Skeneidae,
> Cyclostrematidae, Barleeidae and, may be, some others related?
> I'm getting quite lost about them, so thanks in advance.
>
> Alfonso Pina
>
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--
Dr. David Campbell
425 Scientific Collections
University of Alabama
"I think of my happy condition, surrounded by acres of clams"

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